Biology

Rhodesian Man

Introduction The Rhodesian Man, commonly known as Broken Hill 1 (sometimes Kabwe 1), is an almost full skull discovered in a lead and zinc mine 18 metres below ground level in Broken Hill, Northern Rhodesia, on June 17th, 1921. (now Kabwe, Zambia). It was sent to London in the same year, and it is now […]

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Biology, UPSC

Regions of the Root

A root is a component of a plant that grows underground and helps the plant stay securely planted in the soil. It takes water and minerals from the earth and transports them to the plant’s stem via the xylem. Because they produce comparable organs from the pericycle, such as secondary and tertiary roots, roots are

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Biology, UPSC

Ranunculaceae

The Ranunculaceae family belongs to the Angiosperm division of the Plantae kingdom. These are commonly known as the buttercup or crowfoots family. These are primarily herbaceous, annual or perennial plants that grow in colder regions. These are vastly found in the Himalayan regions of Pakistan and India. The largest genera of the Ranunculaceae family are

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Biology, UPSC

Quaternary Fossil Primates

Fossil primates are found alongside other fossils that include plants and animals. These fossils provide helpful information on which environment these organisms were alive in and where they died.  The plesiadapiforms is the oldest known fossil belonging to the genus Purgatorius. It is also said that the earliest primates descended from the small, insectivorous and

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Biology, UPSC

Protected Area Network

Protected areas are those where human habitation, or, at the very least, resource exploitation, is restricted.  In its classification rules for protected areas, the International Union for Conservation of Nature (IUCN) presented a broadly agreed concept that has been largely accepted across regional and worldwide frameworks. Protected areas are classified according to their level of

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Biology, UPSC

Prokaryotic and Eukaryotic Cells

Prokaryotic and eukaryotic cells are the two kinds of cells forming all life on earth. Prokaryotes are always unicellular, whereas eukaryotic cells can be multicellular or unicellular. In 1937, French researcher Chatton created the prokaryote/eukaryote nomenclature to divide living beings into two main classes: prokaryotes (bacteria) and eukaryotes (organisms with nucleated cells).  Prokaryotic cells These

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Biology, UPSC

Progeny Testing

The Progeny testing method is commonly used in animal breeding programs, and to some extent, in plant breeding. Progeny testing in animals relies on the phenotypic assessment of an individual offspring to make decisions regarding genetic selection. For trades with high heritability, a more straightforward selection protocol may be used, such as selection based on

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Biology, UPSC

Primate Taxonomy

Introduction Taxonomy is the branch of science where you name, identify, classify different species of plants, micro-organisms and animals. Primates are eutherian mammals that constitute the taxonomic order. Primates are mammals that have large brains, use hands and have complex behavioural patterns. In the world of primate taxonomy, the primates are divided into two significant

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Biology, UPSC

Primate Behaviour

Introduction Primatology is the scientific study of primates’ social behaviour and social relationships (animals like monkeys, lemurs, lorises, tarsiers, apes, and humans), with a particular focus on their behaviour towards each other. It may involve observing the behaviours of primates in zoos or the wild, or performing behavioural experiments on them in the lab.  To

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Biology, UPSC